Fashion Statement

What to wear to work is a question to which most people devote substantial time and energy over the course of their careers. Though some workers still routinely knot ties and slip on dress shoes, more and more Americans have traded in suits for sweaters and khakis, a trend that has held its own even after the Internet bubble burst. Other professional opt to alternate between casual or formal, or adopt a look of their own.

The Wall Street Journal Online is conducting a series of interviews with business executives outside...